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Application scope: high power LED constant current drive, lithium battery charging (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, Ni Cd Ni MH battery (battery pack) charging, solar panel, wind generator
Input voltage: 7-40V
Output voltage: continuous adjustable (1.25-35V) (applied to input voltage higher than the output voltage can not boost)
Output current: maximum 10A long time 8A (power tube temperature is more than 65 degrees, please add fan cooling, 24V to 12V 5A within room temperature, generally can not use fan)
Constant current range: 0.3-10A (regulation) module more than 65 degrees, please add fan.
Turn the lamp current: constant current value * (0.1), turn the lamp current and constant current value linkage, such as constant current value is 3A, turn the lamp current is set to 0.1 times the constant current (0.1*3A=0.3A), when the value of the constant current regulation into 2A, then turn lamp current is 0.1 times of constant current (0.1*2A=0.2A).
The secondary version is fixed 0.1 times (the actual turn on current is approximate, not very accurate) for charging whether it is full of instructions.
Lowest dropout: 1V
Conversion efficiency: the maximum is about 95% (the higher the output voltage, the higher the efficiency)
Operating frequency: 300KHZ
Output ripple: ripple 50mV (noise free) 20M bandwidth (for reference only) input 24V output 12V 5A measured
Operating temperature: industrial grade (-40 C to +85 C). Please pay attention to the temperature of the power tube, the temperature is too high, please strengthen the heat dissipation
No load current: typical 20mA (24V to 12V)
Load regulation rate: + 1% (constant voltage)
Voltage regulation rate: + 1%
Constant current accuracy and temperature: actual test, the module temperature changes from 25 degrees to 60 degrees, the constant current value change is less than 5% (constant flow value 5A)
Dynamic response speed: 5% 200uS
Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease)
Indicator lamp: double color indicator lamp, red indicator in charge, green indicator after charging (no load is green)
Output short circuit protection: there is constant current (constant current value is set)
Input reverse connection protection: none,
Output anti reverse perfusion: No, need additional 2 pole tube for charging pool!
Connection mode: wiring terminal
Module size: 65*47*23.5MM
Battery charging method:
1. you need to determine the floating voltage of the rechargeable battery and the charging current, input voltage module;
2. adjust constant voltage potentiometer, adjust the output voltage to about 5V.
3. use multimeter 10A current block to measure output short circuit current, adjust constant current potentiometer at the same time, make the output current reach the predetermined charging current value;
4. to adjust the output voltage of the constant voltage potentiometer to float voltage;
5. connect the battery, test charge.
(1, 2, 3, 4 steps for module input power supply, output no load battery)
LED constant current drive using method:
1. determine that you need to drive the LED's operating current and maximum operating voltage;
2. adjust constant voltage potentiometer, adjust the output voltage to about 5V.
3. use multimeter 10A current block to measure output short circuit current, adjust constant current potentiometer at the same time, make output current reach predetermined LED working current;
4. adjust constant voltage potentiometer to make the output voltage reach the highest working voltage of LED;
5. connect LED, test machine.
(1, 2, 3, 4 steps for module input power supply, output no load LED lamp)
Application range:
The adjustable power supply (10A power), high power LED driver, LED display driver, lead battery, rechargeable lithium battery, vehicle power supply, car laptop power (Buck), power supply system, power supply, low pressure (such as children's toy car with 12V to 6V, 24V battery step-down) 12V 10A \12V 5V 12A \24V 5V 12A \24V to 19V20V and so on, a very wide range of applications.
